Diy Roof Rack Cross Bars . Auxmart roof rack cross bars; Just thought i'd share what i did for some new cross bars. Paddling and Sailing Nice DIY Roof Rack! from paddlingandsailing.blogspot.com The quality is pretty good. 5.4 diy basket roof rack ideas. 4, 1/4″ bolts, 16, 1″ diameter 1/4″ washers, 4, 3/16″ lock washers, and a few other hardware tools will be needed for you to start this project.